<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body></body>
  <script>
    //String
    Array.from('abc'); //['a','b','c']

    //Set
    Array.from(new Set(['abc', 'def'])); //['abc','def']

    //Map
    Array.from(
      new Map([
        [1, 'ab'],
        [2, 'de'],
      ])
    ); //[[1,'ab'],[2,'de']]
  </script>
</html>
